Home / 389,728.92-584,122.48-189,749.64

Finding the Fourth Proportional to 389,728.92, 584,122.48 and 189,749.64

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Solution

The fourth proportional to 389,728.92, 584,122.48 and 189,749.64 is: 284,395.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,728.92 : 584,122.48 = 189,749.64 : x
  2. Step 2: Convert to fraction form
    389,728.92/584,122.48 = 189,749.64/x
  3. Step 3: Cross multiply
    389,728.92x = 584,122.48 × 189,749.64
  4. Step 4: Simplify right side
    389,728.92x = 110,837,030,295.91
  5. Step 5: Solve for x
    x = 110,837,030,295.91/389,728.92
  6. Step 6: Final answer
    x = 284,395.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.